Winter Solstice 2024 Dates Canada. The winter solstice, which marks the first day of winter 2024, occurs on saturday, december 21, 2024 at 4:21 a.m. When do the four seasons start in 2024—for spring, summer, fall, and winter?
So, what is the winter solstice, and why does it happen? Meteological winter begins december 1 / june 1 (depending on hemisphere).